Question

Someone help ASAP solve -5x^2+7x=-9

Answer 1

`x=(7 +/-√(229) )/(10)`

Explanation:

To solve the quadratic, use inverse operations to set it equal to 0.

`-5x^2+7x=-9\\-5x^2+7x+9=0`

To solve, use the quadratic formula and substitute a= -5, b= 7 and c= 9.

`x=(-b +/-√(b^2-4ac) )/(2a) \\\\x=(-7 +/-√(7^2-4(-5)(9)) )/(2(-5)) \\\\x=(-7 +/-√(49+180) )/(-10) \\\\x=(7 +/-√(229) )/(10)`